Z^* Resonances: Phenomenology and Models

Abstract

We explore the phenomenology of, and models for, the Z^* resonances, the lowest of which is now well established, and called the Theta. We provide an overview of three models which have been proposed to explain its existence and/or its small width, and point out other relevant predictions, and potential problems, for each. The relation to what is known about KN scattering, including possible resonance signals in other channels, is also discussed.

29 pages, uses RevTeX4; expanded version (published form)

References in corpus (44)

• Diquarks and Exotic Spectroscopy
• Observation of an Exotic $S=+1$ Baryon in Exclusive Photoproduction from the Deuteron
• Observation of a baryon resonance with positive strangeness in K+ collisions with Xe nuclei
• Observation of an Exotic S = -2, Q = -2 Baryon Resonance in Proton-Proton Collisions at the CERN SPS
• Observation of an Exotic Baryon with S=+1 in Photoproduction from the Proton
• Pentaquark hadrons from lattice QCD
• K+ nucleon scattering and exotic S=+1 Baryons
• Understanding Pentaquark States in QCD
• Experimental Limits on the Width of the Reported Theta(1540)+
• Stable $uudd\bar{s}$ pentaquarks in the constituent quark model
• Pentaquark in the Skyrme Model
• Penta-quark baryon from the QCD Sum Rule
• Interpretation of the Theta+ as an isotensor pentaquark with weakly decaying partners
• Phenomenology of the Pentaquark Antidecuplet
• Are ${\Theta }^{+}$ and the Roper resonance diquark-diquark-antiquark states?
• Where are the missing members of the baryon antidecuplet?
• Pentaquark states in a chiral potential
• QCD Condensates for the Light Quark V-A Correlator
• Exotic baryon states in topological soliton models
• Chiral soliton models, large N_c consistency and the Theta^+ exotic baryon
• ${\Theta }^{+}$ in a chiral constituent quark model and its interpolating fields
• The Theta+ (1540) as a heptaquark with the overlap of a pion, a kaon and a nucleon
• Photoproduction of Theta baryon from the neutron
• Positive Parity Pentaquarks Pragmatically Predicted
• A Method to Unambiguously Determine the Parity of the Theta+ Pentaquark
• Exotic Theta^+ baryon production induced by a photon and a pion
• Partners of the Theta^+ in Large N_c QCD
• Is the Theta+ a K pi N bound state?
• The width of ${\Theta }^{+}$ for large $N_c$ in chiral quark soliton model
• The $J=3/2$ ${\Theta }^{\ast }$ partner to the $\Theta (1540)$ baryon
• Exotic baryon multiplets at large number of colours
• Excited Baryon Decay Widths in Large N_c QCD
• Determining the ${\Theta }^{+}$ quantum numbers through the $K^{+}p\to {\pi }^{+}{K}^{+}n$ reaction
• Exotic Hadrons Of Minimal Pentaquark ($qqqq\Bar{Q}$) States
• Study the exotic ${\Theta }^{+}$ with polarized photon beams
• Determination of the ${\Theta }^{+}$ parity from $\gamma n\to K^{-}{K}^{+}n$
• Time delayed K+ N reactions and exotic baryon resonances
• Strange Pentaquark Hadrons in Statistical Hadronization
• Exotic baryons and the large-Nc expansion
• Theta^+ baryon production in KN and NN reactions
• Properties of baryon anti-decuplet
• The Narrow Theta(1543)--A QCD Dilemma: Tube or Not Tube?
• Pentaquark ${\Theta }^{+}$ production from the reaction $\gamma p\to {\pi }^{+}{K}^{-}{\Theta }^{+}$
• The 27-plet Baryons from Chiral Soliton Models

Cited by in corpus (75)

• Pentaquark hadrons from lattice QCD
• Chiral-Soliton Predictions for Exotic Baryons
• A study of pentaquarks on the lattice with overlap fermions
• Is Theta+(1540) a Kaon--Skyrmion Resonance?
• Pentaquark baryon production at the Relativistic Heavy Ion Collider
• Penta-quark baryon in anisotropic lattice QCD
• Systematics of Exotic Cascade Decays
• A New Application of the Gursey and Radicati Mass Formula
• Extraction of radiative decay width for the non-strange partner of Theta^+
• Pentaquark Theta^+(1540) production in gamma N --> K Anti-K N
• A Naturally Narrow Positive Parity Theta^+
• Exotic and nonexotic magnetic transitions in the context of the SELEX and GRAAL experiments
• Search for the pentaquark resonance signature in lattice QCD
• Pentaquark baryons in SU(3) quark model
• Octet, decuplet and antidecuplet magnetic moments in the chiral quark soliton model revisited
• Estimate of the Theta+ width in the Relativistic Mean Field Approximation
• Pentaquark and diquark-diquark clustering: a QCD sum rule approach
• The colour triplet qqqbar cluster and pentaquark models
• Pentaquarks: Review on Models and Solitonic Calculations of Antidecuplet Magnetic Moments
• Spin 3/2 Penta-quarks in anisotropic lattice QCD
• Prospects for Pentaquark Production at Meson Factories
• Decay of Theta+ in a quark model
• Prediction of Narrow $J^{\pi }=1/2^{+}$, $3/2^{+}$, and $3/2^{-}$ states of ${\Theta }_{+}$ in a Quark model with Antisymmetrized Molecular Dynamics
• Pentaquark implications for exotic mesons
• Spin observables and the determination of the parity of ${\Theta }^{+}$ in photoproduction reactions
• Negative parity pentaquarks in large Nc QCD and quark model
• Triquark correlations and pentaquarks in a QCD sum rule approach
• A comprehensive search for the Θ^+ pentaquark on the lattice
• On the determination of the parity of the ${\Theta }^{+}$
• A Phenomenological Lagrangian Approach to Two Kaon Photoproduction and Pentaquark Searches
• Even Parity $\Theta$-Pentaquark and Stable Strange Nuclear Matter
• Investigating the parity of the exotic Theta^+ baryon from the kaon photoproduction
• Photoproduction of the Theta^+ resonance on the nucleon in a Regge model
• Spin asymmetries in gamma + N --> K*bar + Theta^+
• Pentaquark as Kaon-Nucleon Resonance
• Ground state mass spectrum for scalar diquarks with Bethe-Salpeter equation
• Decay width of the pentaquark state ${\Theta }^{+}(1540)$ with QCD sum rules
• Spin structure of spin-1/2 baryon and spinless meson production amplitudes in photo and hadronic reactions
• The discovery and properties of pentaquarks
• Broken SU(3) antidecuplet for ${\Theta }^{+}$ and ${\Xi }_{3/2}$
• Effects of Instanton Induced Interaction on the Pentaquarks
• Baryons as Fock states of 3,5,... quarks
• Absence of evidence for pentaquarks on the lattice
• A Mass Inequality for the ${\Xi }^{\ast }$ and ${\Theta }^{+}$ Pentaquarks
• Heavy and Light Pentaquark Chiral Lagrangian
• Heavy Quark Analogues of the Theta and Their Excitations
• Phenomenological constraints on the Jaffe-Wilczek model of pentaquarks
• Flavored exotic multibaryons and hypernuclei in topological soliton models
• The anti-decuplet candidate Xi--(1862) as a heptaquark with the overlap of two anti-kaons and a nucleon
• Search for Exotic S=-2 Baryons in proton-antiproton Collisions at sqrt(s) = 1.96 TeV
• Baryon Spectrum in Large N(C) Chiral Soliton and in Quark Models
• Mass spectrum of the J^P=1/2^- and 3/2^- pentaquark antidecuplets in the perturbative chiral quark model
• Experimental Outlook for the Pentaquark
• The Experimental Search for Pentaquark
• Possibility of determinig the parity of the pentaquark ${\Theta }^{+}$ from photoproduction near threshold
• SU(6), Triquark states, and the pentaquark
• Electric properties of the baryon anti-decuplet in the SU(3) chiral quark-soliton model
• A model realisation of the Jaffe-Wilczek correlation for pentaquarks
• Pentaquarks in a Breathing Mode Approach to Chiral Solitons
• Diquark in Nona-quark States
• Some (further) Comments on the Theta(1540) Pentaquark
• Antikaon angular distributions in the reaction $\gamma d\to K^{-}{\Theta }^{+}p\to K^{-}{K}^{+}np$ near the threshold and the parity of the ${\Theta }^{+}$ pentaquark
• Recent issues in hadron spectroscopy
• $P$-parity of charm and strange particles in electroproduction processes, in collinear regime
• Heavy Antiquark Pentaquarks in the CM and GB Models
• Reanalysis the pentaquark ${\Theta }^{+}(1540)$ in the framework of QCD sum rules approach with direct instantons
• P-wave Pentaquark and its Decay in the Quark Model with Instanton Induced Interaction
• Quantized Vibrations in Models of Dibaryons, Pentaquarks and Z* Resonances
• Pentaquarks: Theory overview, and some more about quark models
• Asymptotic directional structure of radiation for fields of algebraic type D
• Notes on exotic anti-decuplet of baryons
• Pentaquarks and Radially Excited Baryons
• Constituent quark models and pentaquark baryons
• Low-lying $s=+1$ Pentaquark states in the Inherent Nodal Structure Analysis
• Heavy Pentaquarks in the Diquark Model and the Large N_c Expansion